32 out of 39 dentists agree that brushing your teeth three times a day helps reduce the risk of tooth decay.  About what percent of the dentists agree?

 

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Jill spends a little over an hour each night on her homework.
If she spends 20 minutes on her math homework, about what percent of the time is she working on her math?

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A farmer has a total of 355 acres of farm land.  He will plant corn on 70 acres, and wheat on 140 of those acres.  The rest of his land will be used for grazing his cows.
About what percent of his acreage will be planted in corn, in wheat
and used for grazing?

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Jan's science book has 512 pages.
The chapter on energy is 47 pages in length. The chapter on geology is about half as long. About what percent of the science book is devoted to energy? On geology?
 

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A suit which normally retails for $299.95, is on sale for $234.95.
About what percent is the discount?
 

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